refactor: Simplify useMarket composable by removing unused client references and improving parameter naming

- Eliminate unnecessary Nostr client retrieval in publishProduct and publishStall functions.
- Update parameter names in event processing functions for clarity, using underscores for unused parameters.
- Clean up imports in useMarket.ts to streamline the codebase.

src/composables/useMarket.ts

@@ -1,4 +1,4 @@
-import { ref, computed, readonly } from 'vue'
+import { ref, readonly } from 'vue'
 import { useNostrStore } from '@/stores/nostr'
 import { useMarketStore, type Market, type Stall, type Product } from '@/stores/market'
 import { config } from '@/lib/config'
@@ -54,8 +54,6 @@ export function useMarket() {
   const loadMarketData = async (marketData: any) => {
     try {
       console.log('Starting loadMarketData...')
-      // Get Nostr client
-      const client = nostrStore.getClient()
       console.log('Got Nostr client')
       
       // Load market configuration
@@ -193,7 +191,7 @@ export function useMarket() {
       })
       
       // Process each stall group, keeping only the most recent version
-      stallGroups.forEach((stallEvents, stallId) => {
+      stallGroups.forEach((stallEvents, _stallId) => {
         // Sort by created_at timestamp (most recent first)
         stallEvents.sort((a, b) => b.event.created_at - a.event.created_at)
         
@@ -263,7 +261,7 @@ export function useMarket() {
       })
       
       // Process each product group, keeping only the most recent version
-      productGroups.forEach((productEvents, productId) => {
+      productGroups.forEach((productEvents, _productId) => {
         // Sort by created_at timestamp (most recent first)
         productEvents.sort((a, b) => b.event.created_at - a.event.created_at)
         
@@ -476,20 +474,8 @@ export function useMarket() {
     }
   }
   
-  const publishProduct = async (productData: any) => {
+  const publishProduct = async (_productData: any) => {
     try {
-      const client = nostrStore.getClient()
-      
-      // Create unsigned event
-      const unsignedEvent = {
-        kind: MARKET_EVENT_KINDS.PRODUCT,
-        content: JSON.stringify(productData),
-        tags: [
-          ['d', productData.id],
-          ['t', 'product']
-        ],
-        created_at: Math.floor(Date.now() / 1000)
-      }
       
       // Note: This would need to be signed with the user's private key
       // For now, we'll just log that this function needs to be implemented
@@ -501,20 +487,8 @@ export function useMarket() {
     }
   }
   
-  const publishStall = async (stallData: any) => {
+  const publishStall = async (_stallData: any) => {
     try {
-      const client = nostrStore.getClient()
-      
-      // Create unsigned event
-      const unsignedEvent = {
-        kind: MARKET_EVENT_KINDS.STALL,
-        content: JSON.stringify(stallData),
-        tags: [
-          ['d', stallData.id],
-          ['t', 'stall']
-        ],
-        created_at: Math.floor(Date.now() / 1000)
-      }
       
       // Note: This would need to be signed with the user's private key
       // For now, we'll just log that this function needs to be implemented